<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>

    <style>
        a {
            display: block;
            background-color: #fff999;
            width: 400px;
            height: 40px;
            color: red;
            text-decoration: none;
            /*text-indent: 2em;*/
            padding-left: 30px;
            line-height: 40px;
        }
        
        a:hover {
            background-color: #5566;
        }
    </style>
</head>

<body>
    <a href="#">手机</a>
    <a href="#">电视</a>
    <a href="#">平板</a>
    <a href="#">家电</a>

    <a href=""></a>
</body>

</html>